Hose-coupling.



T. GLEGG & G. GEE.

HOSE COUPLING.

APPLICATION FILED JAN. 20, 1911.

1,044,495, Patented Nov. 19,1912.

COLUMBIA P! ANOGRAPH 150., WASHINGTON. n. c.

THGMAS GLEC-G AND GEORGE GEE, 0F CALGARY, ALBERTA, GILNADA.

HOSE-COUPLING.

Application filed January 20, 1911.

step or angle cocks on pipe lines carrying :i'luid pressure for theautomatic closing of the coupling when uncoupled, and the automaticopening of the coupling when coupled to another coupler. It isparticularly intended for brake pipe line coupllngs where air brakes areused on trains for train air signal line couplings and for hosecouplings on yard and shop compressed air plants.

lVith the above objects in view our invention consists in thearrangement and operation of parts hereinafter more particularlydescribed and later pointed out in the appended claim.

Figure l is a plan view of one of the couplings. Fig. 2 is a sectionalview through the coupler. the section being taken in the plane denotedby the line A B, Fig. 1. Fig. 3 is a vertical sectional view through thecoupler, the section being taken in the plane denoted by the line C i).Fig. 1. Fig. 4 is a vertical sectional view through the coupler, thesection being taken in the plane denoted by the line F, Fig. 1, certainparts being removed for the sake of clearness. Fig. 5 is a horizontal.cross sectional View through the valve stem 22.

In the drawing like characters of reference indicate corresponding partsin each figure.

1 is the main valve casing supplied with the usual coupler lug 2 andcommunicating through a pipe 3 with a hose l.

5 is an overhanging member castwith the casing 1 and formed so as toreceive the lug 2 of a complementary coupler similar to that hereindescribed.

6 is a pin which engages with the side of the lug 2 of the complementarycoupler when the two r e connected. These latter parts are in common useon the presenttrain pipe line couplers and are not further Specificationof Letters latent.

Patented Nov. 195M912.

Serial No. 603,755.

described as their construction and use is well known to one familiarwith such devices.

The casing 1 has its lower end threaded internally to receive a plug 7fitted with a leather tacing 8 and supplied with a circumferentialgroove 9 which communicates through a duct 10 with the inner side of theplug 0 in other words directly with the interior of the valve casing.The valve casing is supplied substantially mid-way oi its length with anannular shoulder 1.1 against which the piston 12 normally abuts, saidpiston being supplied with suitable rings to prevent leakage as iscustomary. 1' spring 13 is interposed between the under face of thepiston and the opposing face oi the plug 7.

14 is a main valve carried by the piston and adapted to close normallyon a seat 11". which seat is cast with the valve casing.

16 is a gasket located directly above the valve. The coupler is coredout to form a cavity or cylindrical valve chamber at 18, the lower endof the chamber'being closed by a screw plug Within the cylindricalchamber is a valve 20 in the form of a socket which valve adapted toseat at 21 on the upper end of the plug 19. The valve 20 carries a stem22 which extends into the center of the plug 19 which is bored out toreceive it. A. spring is located at the lower end of the stem and bearsagainst the plug. The valve stem has portions thereof 22 cut away for apurpose shortly ex plained. 24 is a further valve located with in thecylindrical chamber 18 and carried by a valve stem 25 which extendsthrough a passage way 25 beyond the upper face of the coupler andappears immediately be neath the portion already referred to. The stem25 has also portions thereof cut away in the same manner as the stem 22.A plunger 26 extends downwardly from the valve 24 into the socket. and aspring 27 is interposed between the end of the socket and the plunger.

28 is a pin passing across the socket and through a suitable slot 29formed in the plunger.

30 is a duct leading from the cylindrical chamber 18 to the duct 10, theconnection between these ducts being made possible by the annular groove9 formed in the plug 7.

31 is a ductpassing from the pipe 3 to the cylindrical opening orchamber 18, such I duct opening to the chamber a point beneath l thevalve seat 21. t When two couplings are to be coupled[ together theoperation is as follows :-The J stems 25 of the valves 24 are depressedby the lugs 2 of the respective couplings so that I whatever pressure isat the back of the piston 12 is released through the ports 10 and r 30to atmosphere as the valves 24 are away from their seats and the valves20 are on the seats 21. The pressure in the pipe line l l consequentlyforces the piston 12 in at direction which unseats the valve 14 so thatthe fluid pressure is allowed to pass to the I adjoining coupling. Vhencouplers such as these are uncoupled the act of turning the couplers torelease them one from the l other, trees the stems 25 so that the valves24 are seated and the valves 20 unseated, f thereby allowing thepressure in the pipe lines to pass to the back of the pistons 12 throughthe ports 31, 30 and 10 to the back i of the pistons, thereby seatingthe valve 14:, I this release taking place before the couplings areactually parted. Consequently there is 1 no escape of pressure from thepipe lines. If however the couplers are broken apart through an accidentsuch as a train wreck, the air brakes will be set by the drop ofjpressure in the pipe lines as the couplers will be torn apart before thevalves 14 can seat. t What we claim as our invention is: t In a hosecoupler, the combination of a valve casing having an open top and closedbottom, a pipe opening to the casing and communicating with the hose, avalve within the casing adapted to close the open end thereof, a pistoncarried by the valve and 4f, slidable within the casing, a springengageable with the under face of the piston and the base of the casing,a valve chamber adjoining the casing and presenting an upper and lowervalve seat, there being a duct leading from beneath the lower valve seatto the interior of the pipe, and a duct leading from above the lowervalve seat to the interior of the valve casing beneath the piston, andfurther a passage way leading from the top of the valve chamber to theexterior of the coupling, a springpressed valve in the form of a socketslidable within the valve chamber and adapted to seat on the lower valveseat, a valve stem passing through the passage way and projecting beyondthe face of the coupling, a valve carried by the stem and designed toseat on the upper valve seat, a plunger eX tending downwardly from thelatter valve and into the socket, a spring interposed between the end ofthe plunger and the base of the socket, and a pin carried by the socketand passing through a suitable slot formed in the plunger, as and forthe purpose speci- $5 fied.

Signed at Winnipeg, in the province of Manitoba, this 28th day ofNovember, 1910.

THOS. CLEGG. GEORGE GEE.

in the presence of- G. L. ROXBURGH, J. K. ELKIN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. 0.

